How severe is CVE-2023-52951?

CVE-2023-52951 has a CVSS 3.x base score of 5.9, rated medium severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.

Is CVE-2023-52951 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (3rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-52951?

CVE-2023-52951 affects Synology Note Station Client. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2023-52951?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2023-52951 have an EU (EUVD) identifier?

Yes. CVE-2023-52951 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2023-60579.

When was CVE-2023-52951 published?

CVE-2023-52951 was published on 2026-06-03 and last updated on 2026-06-17.

CVE-2023-52951

CVE-2023-52951 is a medium-severity vulnerability in Synology Note Station Client with a CVSS 3.x base score of 5.9. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-319.

Key facts

Severity: Medium (CVSS 3.x base score 5.9)
EPSS exploit prediction: 0% (3rd percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2023-60579
Weakness: CWE-319
Affected product: Synology Note Station Client
Published: 2026-06-03
Last modified: 2026-06-17

Description

A cleartext transmission of sensitive information vulnerability in Synology Note Station Client before 2.2.4-703 allows man-in-the-middle attackers to obtain user credential.

Frequently asked questions

What is CVE-2023-52951?: A cleartext transmission of sensitive information vulnerability in Synology Note Station Client before 2.2.4-703 allows man-in-the-middle attackers to obtain user credential.
How severe is CVE-2023-52951?: CVE-2023-52951 has a CVSS 3.x base score of 5.9, rated medium severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.
Is CVE-2023-52951 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (3rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-52951?: CVE-2023-52951 affects Synology Note Station Client. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2023-52951?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2023-52951 have an EU (EUVD) identifier?: Yes. CVE-2023-52951 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2023-60579.
When was CVE-2023-52951 published?: CVE-2023-52951 was published on 2026-06-03 and last updated on 2026-06-17.

References

https://www.synology.com/en-global/releaseNote/NoteStationClient

Affected products (1)

cpe:2.3:a:synology:note_station_client:*:*:*:*:*:*:*:*

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